INFO: rcu_tasks detected stalls on tasks:
ffff88807ccf3e80: .. nvcsw: 1080/1080 holdout: 1 idle_cpu: -1/0
task:kworker/u8:27   state:R  running task     stack:23496 pid:16964 tgid:16964 ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: events_unbound macvlan_process_broadcast
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5820 kernel/sched/core.c:7382
 preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7561
 preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
 __local_bh_enable_ip+0xe9/0x140 kernel/softirq.c:480
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 netif_rx+0x89/0xa0 net/core/dev.c:5978
 macvlan_broadcast+0x375/0x630 drivers/net/macvlan.c:292
 macvlan_multicast_rx drivers/net/macvlan.c:-1 [inline]
 macvlan_process_broadcast+0x437/0x650 drivers/net/macvlan.c:344
 process_one_work kernel/workqueue.c:3495 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3578
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3659
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>